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  <title>Document</title>
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  <script>
    function age(a){
      let num = 0
      for(let i = 0; i < a.length; i++){
        if(a[i] % 2 === 0){
num += a[i]
        }
      }
      return num
    }
    let b = age()
    console.log(b);
  </script>
</body>
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